U.S. Geological Survey National Assessment of Oil and Gas Resources Project

Map of Assessed Coalbed-Gas Resources in the

United States, 2014

U.S. Department of the Interior

U.S. Geological Survey

Digital Data Series 69–II

Detroit

Los Angeles

Chicago

Atlanta

Dallas

New York City

Boston

Houston

Washington

Miami

Philadelphia

Denver

San Jose

Seattle

Cleveland

Baltimore

Saint Louis

Tulsa

Phoenix San Diego

Pittsburgh

Kansas City

Portland

Indianapolis

Buffalo

Akron

Milwaukee

Camden Sacramento

Flint

Richmond

Memphis

Omaha

Oakland

Dayton

Nashville

MinneapolisSaint Paul

Cincinnati

San Antonio

Tampa

Rochester

Columbus

Wichita

Birmingham

Toledo

Fort

Worth

Tucson

Concord

Louisville

Norfolk

Hartford

Orlando

Spokane

Charlotte

Tacoma

Oklahoma

City

Eugene

Knoxville

Sarasota

Lansing

Jackson

Jacksonville

Marietta

Austin

Salt Lake City

Springfield

Providence

Clearwater

New Orleans

Las Vegas

Trenton

Pensacola

Albuquerque

Augusta

Winston-Salem

Roanoke

Baton Rouge

Mobile

Syracuse

Youngstown

Huntsville

Chattanooga

El Paso

Greenville

Fort Wayne

Fort LauderdaleWest Palm Beach

Grand

Rapids

Duluth

Vancouver

Covington

Little Rock

Newport NewsHampton

Cocoa

Beach

TEXAS

UTAH

MONTANA

NEVADA

CALIFORNIA

IDAHO

ARIZONA

OREGON

IOWA

KANSAS

WYOMING

NEW MEXICO

COLORADO

OHIO

MISSOURI

NEBRASKA

MINNESOTA

ILLINOIS

GEORGIA

FLORIDA

OKLAHOMA

ALABAMA

WISCONSIN

WASHINGTON

SOUTH DAKOTA

ARKANSAS

MAINE NORTH DAKOTA

NEW YORK

VIRGINIA

MISSISSIPPI

LOUISIANA

INDIANA

MICHIGAN

TENNESSEE

KENTUCKY

PENNSYLVANIA

NORTH CAROLINA

SOUTH CAROLINA

WEST

VIRGINIA

VERMONT

MASSACHUSETTS

MARYLAND

NEW JERSEY

NEW

HAMPSHIRE

CONNECTICUT

PUERTO RICO

DELAWARE

RHODE ISLAND

U.S. VIRGIN

ISLANDS

HAITI

THE

BAHAMAS

DOMINICAN

REPUBLIC

CUBA

Williston Basin Province

0.88 TCFG

Appalachian Basin Province

8.40 TCFG

Powder River Basin Province

14.26 TCFG

Uinta-Piceance Basin Province

2.31 TCFG

Arkoma Basin Province

3.51 TCFG

Western Oregon and Washington Province

1.49 TCFG

Southwestern Wyoming Province

1.53 TCFG

San Juan Basin Province

24.24 TCFG

Wind River Basin Province

0.25 TCFG

Bighorn Basin Province

0.13 TCFG

Raton Basin Province

1.59 TCFG

Paradox Basin Province

0.45 TCFG

Wyoming Thrust Belt Province

0.36 TCFG

Gulf Coast Region

4.06 TCFG

Black Warrior Basin Province

7.05 TCFG

Illinois Basin Province

0.44 TCFG

Cherokee Platform Province

1.91 TCFG

Forest City Basin Province

0.45 TCFG

130° 125° 120° 115° 110° 105° 100° 95° 90° 85° 80° 75° 70°

50°

45°

40°

35°

30°

25°

20°

15°

10°

45°

40°

35°

30°

25°

20°

15°

10°

150° 145° 140° 135° 130° 125° 120° 115° 110° 105° 100° 95° 90° 85° 80° 75° 70° 65° 60° 55° 50°

Northern Alaska Province

18.06 TCFG

Southern Alaska Province

4.67 TCFG

0 50 100 MILES

0 50 100 KILOMETERS

Alaska Albers Equal Area Conic Projection

Central Meridian: -154.0

Standard Parallel 1: 55.0

Standard Parallel 2: 65.0

Latitude of origin: 50.0

Datum: North American Datum 1983

155°

155° 140° 135°

145°

145°

150°

150°

160°

160°

165°

180° 175° 170° 165°

70°

70°

65°

65°

60°

60°

55°

55°

Forest City Basin–

Central Basin Play

Cherokee Platform–

Central Basin Play

Raton

Coalbed-Gas

AU

Vermejo

Coalbed-Gas

AU

Cook Inlet

Coalbed-Gas AU

Menefee CoalbedGas AU

Fruitland Fairway

Coalbed-Gas AU

Basin Fruitland

Coalbed-Gas AU

Kaiparowits

Plateau

CoalbedGas AU Sagavanirtok Formation

Coalbed-Gas AU

Prince Creek–Tuluvak Formations

Coalbed-Gas AU

Nanushuk Formation

Coalbed-Gas AU

Northern Coal Fairway/

Drunkards Wash AU

Central Coal Fairway/

Buzzards Bench AU

Southern Coal Fairway AU

Southern Coal Outcrop AU

Uinta Basin Blackhawk

Coalbed-Gas AU

Mesaverde Group

Coalbed-Gas AU

Eocene Coalbed-Gas AU

Wasatch–Green River

Coalbed-Gas AU

Fort Union

Coalbed-Gas AU

Fort Union Coalbed-Gas AU

Lance Coalbed-Gas AU

Mesaverde Coalbed-Gas AU

Mesaverde Coalbed-Gas AU

Frontier-Adaville-Evanston

Coalbed-Gas AU

Fort Union Coalbed-Gas AU

Meeteetse Coalbed-Gas AU

Mesaverde

Coalbed-Gas AU

Fort Union Formation

Coalbed-Gas AU

Mesaverde-Meeteetse

Formation CoalbedGas AU

Wasatch

Formation AU

Upper Fort Union

Formation AU

Lower Fort

Union-Lance

Formations AU

Ft. Union Coalbed-Gas AU

Pocahontas Basin AU

East Dunkard (Folded) AU

Pennsylvanian

Coalbed-Gas AU

25

10

5

1

Coalbed-Gas Assessment Units—Merged

on conterminous U.S. map. On inset

maps, outlined and labeled with red

text in a light red background.

Explanation

Mean coalbed-gas resource estimates (TCFG)—Undiscovered,

technically recoverable. TCFG, trillions of cubic feet of gas.

Warrior Basin AU

Cretaceous Olmos Coalbed-Gas AU

Wilcox Coalbed-Gas AU

Arkoma Coalbed-Gas AU

PACIFIC OCEAN

ATLANTIC OCEAN

Gulf of Mexico MEXICO

CANADA

UNITED STATES

Map of Assessed Coalbed-Gas Resources in the United States, 2014

By

U.S. Geological Survey National Assessment of Oil and Gas Resources Team, 

and Laura R.H. Biewick, compiler

2014

Shaded relief from U.S. Geological Survey, The National Map, published 2007 at http://nationalmap.gov/

Bathymetry from ETOPO1, NOAA Technical Memorandum

NESDIS NGDC–24 (Amante and Eakins, 2009)

Albers Equal Area Conic Projection, Central Meridian: -96.0

Standard Parallel 1: 29.5, Standard Parallel 2: 45.5

Latitude of origin: 23.0

Datum: North American Datum 1983

Any use of trade, firm, or product names is for descriptive purposes only and does not imply 

endorsement by the U.S. Government.

Although this information product, for the most part, is in the public domain, it also contains 

copyrighted materials as noted in the text. Permission to reproduce copyrighted items must 

be secured from the copyright owner.

This database, identified as DDS 69–ii, has been approved for release and publication by the 

U.S. Geological Survey (USGS). Although this database has been subjected to rigorous 

review and is substantially complete, the USGS reserves the right to revise the data 

pursuant to further analysis and review. Furthermore, it is released on condition that neither 

the USGS nor the U.S. Government may be held liable for any damages resulting from its 

authorized or unauthorized use.

For more information concerning this publication, contact:

Center Director, USGS Central Energy Resources Science Center

Box 25046, Mail Stop 939

(303) 236-1647

Or visit the Central Energy Resources Science Center Web site at:

http://energy.usgs.gov/

Publishing support provided by: 

Denver Publishing Service Center

Edit and digital layout by L.J. Binder

Manuscript approved for publication November 14, 2014

To learn about the USGS and its information products visit

http://www.usgs.gov/ 

1-888-ASK-USGS

This report is available at:

http://pubs.usgs.gov/dds/dds-069/dds-069-ii/ and on 

CD-ROM by contacting eteamdisks@usgs.gov

Suggested citation: U.S. Geological Survey National Assessment of Oil and 

Gas Resources Team, and Biewick, L.R.H., compiler, 2014, Map of assessed 

coalbed-gas resources in the United States, 2014: U.S. Geological Survey 

Digital Data Series 69–II, 6 p., 1 pl., GIS data package,

http://dx.doi.org/10.3133/ds69ii. 

ISSN 2327-638X (online)

http://dx.doi.org/10.3133/ds69ii

100 0 100 200 300 400 500 MILES

100 0 100 200 300 400 500 600 700 KILOMETERS

Abstract

This report presents a digital map of coalbed-gas 

resource assessments in the United States as part of the U.S. 

Geological Survey’s (USGS) National Assessment of Oil and 

Gas Project. Using a geology-based assessment 

methodology, the USGS quantitatively estimated potential 

volumes of undiscovered, technically recoverable natural 

gas resources within coalbed-gas assessment units (AUs). 

This is the third digital map product in a series of USGS 

unconventional oil and gas resource maps. The map can be 

printed in hardcopy form or downloaded in a Geographic 

Information System (GIS) data package, including an ArcGIS 

ArcMap document (.mxd), geodatabase (.gdb), and published 

map file (.pmf). In addition, the publication access table 

contains hyperlinks to current USGS coalbed-gas assessment 

publications and web pages.

Access to Report

This entire publication is available online at the USGS web site:

http:/pubs.usgs.gov/dds/dds-069/dds-069-ii/ and on CD-ROM by contacting:

eteamdisks@usgs.gov.

Access to Assessment Results

Comprehensive geologic studies, supporting data, and reports on the 

methodology used in assessing undiscovered oil and gas resources in the United 

States are available at the USGS Central EnergyResources Science Center website: 

http://energy.usgs.gov/OilGas/AssessmentsData/NationalOilGasAssessment.aspx

Project Chief: Christopher J. Schenk

Arkoma Basin Province

Assessed 2010

Gulf Coast Region

Assessed 2007

Black Warrior Basin Province

Assessed 2002

Illinois Basin Province

Assessed 2007

Appalachian Basin Province

Assessed 2002

Williston Basin Province Powder River Basin Province Assessed 2008

Assessed 2002

Bighorn Basin Province

Assessed 2008

Wind River Basin Province

Assessed 2005

Wyoming Thrust Belt

Province

Assessed 2003 Southwestern Wyoming Province

Assessed 2002

Western Oregon

and Washington

Province

Assessed 2009

Uinta-Piceance Basin Province

Assessed 2002

Northern Alaska Province

Assessed 2006

Paradox Basin Province

Assessed 2011

San Juan Basin Province

Assessed 2002

Southern Alaska Province

Assessed 2011

Raton Basin Province

Assessed 2004

Forest City Basin Province

Assessed 1995

Cherokee Platform Province

Assessed 1995

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0 20 40 KILOMETERS

0 15 30 MILES

0 15 30 KILOMETERS

0 40 80 MILES

0 40 80 KILOMETERS

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0 20 40 KILOMETERS

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0 30 60 KILOMETERS

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U.S. Department of the Interior

U.S. Geological Survey

Digital Data Series 69–II

Plate 1
Cover. The Anderson coal bed and overburden in the Powder River Basin, Montana. Photograph by David Scott (USGS).
Map of Assessed Coalbed-Gas Resources 

in the United States, 2014

By U.S. Geological Survey National Assessment of Oil and Gas Resources Team, 

and Laura R.H. Biewick, compiler

U.S. Geological Survey National Assessment of Oil and Gas Resources Project

Digital Data Series 69–II

U.S. Department of the Interior

U.S. Geological Survey
U.S. Department of the Interior

SALLY JEWELL, Secretary

U.S. Geological Survey

Suzette M. Kimball, Acting Director

U.S. Geological Survey, Reston, Virginia: 2014

For more information on the USGS—the Federal source for science about the Earth, its natural and living 

resources, natural hazards, and the environment, visit http://www.usgs.gov or call 1–888–ASK–USGS.

For an overview of USGS information products, including maps, imagery, and publications, 

visit http://www.usgs.gov/pubprod

To order this and other USGS information products, visit http://store.usgs.gov

Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the 

U.S. Government.

Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials 

as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.

Suggested citation:

U.S. Geological Survey National Assessment of Oil and Gas Resources Team, and Biewick, L.R.H., compiler, 2014, Map 

of assessed coalbed-gas resources in the United States, 2014: U.S. Geological Survey Digital Data Series 69–II, 6 p., 

1 pl., GIS data package, http://dx.doi.org/10.3133/ds069II.

ISSN 2327-638X (online)
iii

Contents

Abstract...........................................................................................................................................................1

Introduction.......................................................................................................................................................1

Print Map ................................................................................................................................ 1

Web Services..................................................................................................................................................3

Download Maps and Data ......................................................................................................... 3

Summary ............................................................................................................................................................3

Acknowledgments.........................................................................................................................................4

References Cited..............................................................................................................................................4

Plate

1. Map of assessed coalbed-gas resources in the United States, 2014 ............................ link

Figure

1. Map graphic links to the coalbed-gas resources hardcopy map ........................................2

Table

1. Publication access table—Hyperlinks to USGS coalbed-gas assessment 

publications and Web pages (21 × 24).................................................................................. link

Abstract

This report presents a digital map of coalbed-gas resource 

assessments in the United States as part of the U.S. Geological 

Survey’s (USGS) National Assessment of Oil and Gas Project. 

Using a geology-based assessment methodology, the USGS 

quantitatively estimated potential volumes of undiscovered, 

technically recoverable natural gas resources within coalbedgas assessment units (AUs). This is the third digital map product in a series of USGS unconventional oil and gas resource 

maps. The map plate included in this report can be printed in 

hardcopy form or downloaded in a Geographic Information 

System (GIS) data package, including an ArcGIS ArcMap 

document (.mxd), geodatabase (.gdb), and published map 

file (.pmf). In addition, the publication access table contains 

hyperlinks to current USGS coalbed-gas assessment publications and Web pages.

Introduction

The U.S. Geological Survey (USGS) carries out scientific 

investigations and assessments of geologically based energy 

resources, including unconventional resources (for example, 

shale gas, tight gas, unconventional oil, and coalbed methane). 

These scientific studies are used to evaluate and assess the 

quality and distribution of energy resource accumulations and 

the undiscovered, technically recoverable energy resource 

potential of the United States (U.S.). This publication summarizes the results of the U.S. coalbed-gas assessment in a 

geospatial map and data package.

The total petroleum system (TPS) is the basic geologic unit of the oil and gas assessment; it includes all of 

the essential elements and processes needed for oil and gas 

accumulations to exist, including the presence of source and 

reservoir rocks, hydrocarbon generation and migration, traps 

and seals, and undiscovered accumulations. An assessment 

unit (AU) is a mappable volume of rock within a total petroleum system in which discovered and undiscovered resource 

accumulations are relatively similar with respect to geology, 

exploration strategy, and risk characteristics (Ahlbrandt, 

2000). Comprehensive geologic studies, supporting data, 

and reports on the methodology used in assessing undiscovered oil and gas resources in the United States are available at the USGS Central Energy Resources Science Center

Web site at: http://energy.usgs.gov/OilGas/AssessmentsData/

NationalOilGasAssessment.aspx.

Print Map

The map of coalbed-gas resources is available as a static 

Portable Document Format (.pdf) file and as an interactive 

map. These products are available at http://pubs.usgs.gov/

dds/dds-069/dds-069-ii/ or http://dx.doi.org/10.3133/ds69ii. 

The software used to create this digital map product includes: 

Environmental Systems Research Institute, Inc. (Esri) ArcGIS 

10, Python, Adobe Photoshop CS5.1, Illustrator CS5.1, and 

Acrobat 7.0. 

To access the hardcopy .pdf map, click on the map 

graphic shown in figure 1. Adobe Acrobat Reader software is 

recommended to view the .pdf map and is available for download free-of-charge at http://get.adobe.com/reader/.

Map of Assessed Coalbed-Gas Resources in the 

United States, 2014

By U.S. Geological Survey National Assessment of Oil and Gas Resources Team,

and Laura R.H. Biewick, compiler
Figure 1. The hardcopy .pdf map is designed to be printed on a 46 x 35 inch map sheet. The map graphic links to the tight-gas resources hardcopy m

Detroit

Los Angeles

Chicago

Atlanta

Dallas

New York City

Boston

Houston

Washington

Miami

Philadelphia

Denver

San Jose

Seattle

Cleveland

Baltimore

Saint Louis

Tulsa

Phoenix San Diego

Pittsburgh

Kansas City

Portland

Indianapolis

Buffalo

Akron

Milwaukee

Camden Sacramento

Flint

Richmond

Memphis

Omaha

Oakland

Dayton

Nashville

MinneapolisSaint Paul

Cincinnati

San Antonio

Tampa

Rochester

Columbus

Wichita

Birmingham

Toledo

Fort

Worth

Tucson

Concord

Louisville

Norfolk

Hartford

Orlando

Spokane

Charlotte

Tacoma

Oklahoma

City

Eugene

Knoxville

Sarasota

Lansing

Jackson

Jacksonville

Marietta

Austin

Salt Lake City

Springfield

Providence

Clearwater

New Orleans

Las Vegas

Trenton

Pensacola

Albuquerque

Augusta

Winston-Salem

Roanoke

Baton Rouge

Mobile

Syracuse

Youngstown

Huntsville

Chattanooga

El Paso

Greenville

Fort Wayne

Fort LauderdaleWest Palm Beach

Grand

Rapids

Duluth

Vancouver

Covington

Little Rock

Newport NewsHampton

Cocoa

Beach

TEXAS

UTAH

MONTANA

NEVADA

CALIFORNIA

IDAHO

ARIZONA

OREGON

IOWA

KANSAS

WYOMING

NEW MEXICO

COLORADO

OHIO

MISSOURI

NEBRASKA

MINNESOTA

ILLINOIS

GEORGIA

FLORIDA

OKLAHOMA

ALABAMA

WISCONSIN

WASHINGTON

SOUTH DAKOTA

ARKANSAS

MAINE

NORTH DAKOTA

NEW YORK

VIRGINIA

MISSISSIPPI

LOUISIANA

INDIANA

MICHIGAN

TENNESSEE

KENTUCKY

PENNSYLVANIA

NORTH CAROLINA

SOUTH CAROLINA

WEST

VIRGINIA

VERMONT

MASSACHUSETTS

MARYLAND

NEW JERSEY

NEW

HAMPSHIRE

CONNECTICUT

DELAWARE

RHODE ISLAND

THEBAHAMAS

CUBA

Williston Basin Province0.88 TCFG

Appalachian Basin Provin8.40 TCFG

Powder River Basin Province14.26 TCFG

Uinta-Piceance Basin Province

2.31 TCFG

Arkoma Basin Province

3.51 TCFG

Western Oregon and Washington Province1.49 TCFG

Southwestern Wyoming Province

1.53 TCFG

San Juan Basin Province

24.24 TCFG

Wind River Basin Province

0.25 TCFG

Bighorn Basin Province

0.13 TCFG

Raton Basin Province1.59 TCFG

Paradox Basin Province

0.45 TCFG

Wyoming Thrust Belt Province

0.36 TCFG

Gulf Coast Region

4.06 TCFG

Black Warrior Basin Province7.05 TCFG

Illinois Basin Province

0.44 TCFG

Cherokee Platform Province

1.91 TCFG

Forest City Basin Province

0.45 TCFG

130° 125° 120° 115° 110° 105° 100° 95° 90° 85° 80° 

45°

40°

35°

30°

25°

20°

15°

10°

150° 145° 140° 135° 130° 125° 120° 115° 110° 105° 100° 95° 90° 85° 80° 75° 70° 65° 60° 

Northern Alaska Province18.06 TCFG

Southern Alaska Province4.67 TCFG

0 50 100 MILES

0 50 100 KILOMETERS

Alaska Albers Equal Area Conic Projection

Central Meridian: -154.0Standard Parallel 1: 55.0Standard Parallel 2: 65.0Latitude of origin: 50.0

Datum: North American Datum 1983

155°

155° 140° 135°

145°

145°

150°

150°

160°

160°

165°

180° 175° 170° 165°

70°

70°

65°

65°

60°

60°

55°

55°

Forest City Basin

Central Basin Pl

Cherokee Platform–

Central Basin Play

Raton

Coalbed-Gas

AU

Vermejo

Coalbed-Gas

AU

Cook Inlet

Coalbed-Gas AU

Menefee CoalbedGas AU

Fruitland Fairway

Coalbed-Gas AU

Basin Fruitland

Coalbed-Gas AU

Kaiparowits

Plateau

CoalbedGas AU Sagavanirtok Formation

Coalbed-Gas AU

Prince Creek–Tuluvak Formations

Coalbed-Gas AU

Nanushuk Formation

Coalbed-Gas AU

Northern Coal Fairway/

Drunkards Wash AU

Central Coal Fairway/

Buzzards Bench AU

Southern Coal Fairway AU

Southern Coal Outcrop AU

Uinta Basin Blackhawk

Coalbed-Gas AU

Mesaverde Group

Coalbed-Gas AU

Eocene Coalbed-Gas AU

Wasatch–Green River

Coalbed-Gas AU

Fort Union

Coalbed-Gas AU

Fort Union Coalbed-Gas AU

Lance Coalbed-Gas AU

Mesaverde

Coalbed-Gas AU

Mesaverde Coalbed-Gas AU

Frontier-Adaville-Evanston

Coalbed-Gas AU

Fort Union Coalbed-Gas AU

Meeteetse Coalbed-Gas AU

Mesaverde

Coalbed-Gas AU

Fort Union Formation

Coalbed-Gas AU

Mesaverde-Meeteetse

Formation CoalbedGas AU

Wasatch

Formation AU

Upper Fort Union

Formation AU

Lower Fort

Union-Lance

Formations AU

Ft. Union Coalbed-Gas AU

Cretaceous Olmos Coalbed-Gas AU

Wilcox Coalbed-Gas AU

Arkoma Coalbed-Gas AU

PACIFIC OCEAN ATLANTIC OCEAN

Gulf of Mexico MEXICO

CANADA

UNITED STATES

Map of Assessed Coalbed-Gas Resources in the United States, 2014ByU.S. Geological Survey National Assessment of Oil and Gas Resources Team, and Laura R.H. Biewick, compiler2014

Shaded relief from U.S. Geological Survey, The National Map, published 2007 at http://nationalmap.gov/

Bathymetry from ETOPO1, NOAA Technical MemorandumNESDIS NGDC–24 (Amante and Eakins, 2009)

Albers Equal Area Conic Projection, Central Meridian: -96.0

Standard Parallel 1: 29.5, Standard Parallel 2: 45.5

Latitude of origin: 23.0

Datum: North American Datum 1983

Any use of trade, firm, or product names is for descriptive purposes onendorsement by the U.S. Government.Although this information product, for the most part, is in the public docopyrighted materials as noted in the text. Permission to reproduce cobe secured from the copyright owner.This database, identified as DDS 69–ii, has been approved for release aU.S. Geological Survey (USGS). Although this database has been sreview and is substantially complete, the USGS reserves the righpursuant to further analysis and review. Furthermore, it is released on the USGS nor the U.S. Government may be held liable for any damaauthorized or unauthorized use.

100 0 100 200 300 400 500 MILES

100 0 100 200 300 400 500 600 700 KILOMETERS

Arkoma Basin Province

Assessed 2010

Gulf Coast Region

Assessed 2007

Williston Basin Province

Powder River Basin Province Assessed 2008

Assessed 2002

Bighorn Basin Province

Assessed 2008

Wind River Basin Province

Assessed 2005

Wyoming Thrust Belt

Province

Assessed 2003 Southwestern Wyoming Province

Assessed 2002

Western Oregonand WashingtonProvince

Assessed 2009

Uinta-Piceance Basin Province

Assessed 2002

Northern Alaska Province

Assessed 2006

Paradox Basin Province

Assessed 2011

San Juan Basin Province

Assessed 2002

Southern Alaska Province

Assessed 2011

Raton Basin Province

Assessed 2004

Forest City Basin Province

Assessed 1995

Cherokee Platform Province

Assessed 1995

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0 50 

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U.S. Department of the InteriorU.S. Geological Survey
Summary 3

Web Services

This report also includes a Web map service. To access the 

coalbed-gas Web service, visit the USGS National Assessment 

of Oil and Gas Resources Web site at http://energy.usgs.gov/

OilGas/AssessmentsData/NationalOilGasAssessment.aspx.

Download Maps and Data

The map of assessed coalbed-gas resources is available as 

a GIS map and data package that can be downloaded from the 

USGS Web site: http://pubs.usgs.gov/dds/dds-069/dds-069-ii/

or http://dx.doi.org/10.3133/ds69ii. The ArcMap document, 

whose filename contains an .mxd extension, is the main 

component of the GIS data package, and is used to analyze 

geospatial data, symbolize features, and create maps. The .mxd 

file needs Esri’s ArcGIS 10 or a newer version of the desktop 

software (Esri, 2000). Using the published .mxd and the ArcGIS Publisher extension (Esri, 2008a) in ArcMap, a special file 

called a published map file was created. Published map files 

contain a .pmf extension, and can be accessed using any ArcGIS (Esri, 2000) desktop product, including the free-of-charge 

ArcReader (Esri, 2008b) application. ArcMap and ArcReader 

offer different ways to view a map, in which one can perform 

map-based tasks. ArcReader provides basic tools for map viewing, printing and querying of geospatial data. More advanced 

geospatial processing is available in the ArcGIS suite of geospatial processing programs, including ArcMap.

There are two ArcMap documents contained in this 

report: (1) CoalbedGasMap2014.mxd, and (2) CoalbedGasMap2014simplified.mxd. CoalbedGasMap2014.mxd is a 

complex ArcGIS project used to build, design, and export the 

.pdf map. Multiple data frames enable the advanced user to 

navigate each province area; upon initial launch, this file tends 

to be much slower than subsequent map starts. CoalbedGasMap2014simplified.mxd is designed for a novice GIS user to 

easily navigate and utilize the data. 

The digital map layout of both the .mxd and the .pmf, 

contains a map window with a series of layers in the table of 

contents frame on the left side of the navigation screen. Within 

the table of contents, select the box to the left of each layer 

or group of layers to display the features in map view. Click 

the “+” sign to the left of each layer, group, or data frame to 

display the symbology or the list of layers within that group or 

data frame. To deselect the entire group, ctrl-click the check 

box to the left of any one of the AU names. Ctrl-click again to 

toggle the check boxes on for the entire group.

By default, the map is displayed in Layout View, and the 

Contiguous U.S. (lower 48) is the active data frame. Layout

View is designed to work with the map layout and graphic elements, such as titles, north arrows, and scale bars, along with 

the data frame, all of which are arranged on a page. Data View

is designed for exploring, displaying, and querying the data 

sets presented on your map, which is displayed in real-world 

coordinates (Esri, 2011). Navigation between Layout View 

and Data View is available from the View drop-down menu.

Labels and annotation for the AUs are included as separate layers that can be toggled on and off, as deemed appropriate for a particular map display. In the simplified .mxd, the 

‘Coalbed-Gas AU Annotation’ layer when visible, shows all 

coalbed-gas AU names. Users may wish to zoom into a particular area of interest, in which case, individual province labels 

available within each province group, can be toggled on and 

the AU annotation layer can be toggled off (made invisible).

ArcMap documents (.mxd) and published map files (.pmf) 

can be enhanced by including auxiliary base map layers, many 

of which are available as ArcGIS services (for example, shaded 

relief, world imagery; Esri, 2010). Several base layers are visible 

upon opening the map document, and set up as the default view. 

An important base layer, geologic units from the Geologic Map 

of North America (Reed and others, 2005; Garrity and Soller, 

2009), is included for additional geologic context. Because 

many of these base layers are very large files, toggling these layers off can hasten map display while navigating the interactive 

map. Once an appropriate map graphic has been created, or area 

of interest has been isolated, the addition of one or more of the 

base layers can enhance the final map product or view.

All geospatial datasets are stored in file geodatabase (Esri, 

2012; CoalbedGas2014.gdb and BaseLayers.gdb) and shapefile 

format in a World Geodetic System (WGS) 1984 or a North 

American Datum (NAD) 1983 projection, which are standard 

projections for distributing geospatial data. The polygons in 

CoalbedGas2014.gdb represent the coalbed-gas AUs that have 

been defined and assessed by the USGS. An important aspect 

of this map product is that it does not require extensive GIS 

expertise or highly specialized equipment to use. 

The Metadata folder contains coalbed-gas data documentation in XML, html, and text format. The base map layers have 

metadata incorporated from the published sources. Reference 

or base layers from “The National Atlas of the United States 

of America” (U.S. Department of the Interior (DOI), 2008) 

include: state and county boundaries, streams, water bodies, 

and urban areas in the United States. For the ArcGIS.com Web 

services (formerly ArcGIS Online; Esri, 2010), data descriptions, sources, and credits are stored as layer properties. 

Summary

The USGS map of the principal coalbed-gas resources 

in the United States displays the occurrence of this important 

resource in many regions across the country. Estimates of the 

coalbed-gas resource, especially the portion that is technically 

recoverable, are likely to change over time as our geologic 

understanding of the resource characteristics increases and 

with further advances in recovery methods. New information can be readily added to the digital baseline developed 

for the USGS National Assessment of Oil and Gas project. 

The ability to view, edit, create, and analyze geospatial data 

can enhance and increase our understanding of coalbed-gas 

resources and assessments. 
4 Map of Assessed Coalbed-Gas Resources in the United States, 2014

Acknowledgments

This report is a compilation of the work by many USGS 

Energy Resources Program geologists who presented the 

geologic evidence critical to defining and assessing coalbedgas resource volumes across the United States. The manuscript 

was improved by reviews from Christopher J. Schenk, Thomas 

Finn, and David Ferderer, and thanks are extended to them for 

their thoughtful evaluations and suggested revisions.

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Publishing support provided by: 

Denver Publishing Service Center

For more information concerning this publication, contact:

Center Director, USGS Central Energy Resources Science Center

Box 25046, Mail Stop 939

Denver, CO 80225

(303) 236-1647

Or visit the Central Energy Resources Science Center Web site at: 

http://energy.usgs.gov/
USGS National Assessment of Oil and Gas Resources Team and Biewick—Map of Assessed Coalbed-Gas Resources, U.S., 2014—Digital Data Series DDS–69–II

ISSN 2327-638X (online)

http://dx.doi.org/10.3133/ds69II